Photoirradiation Effects on Light-Emitting Devices Based on Poly (p-phenylene vinylene) Derivative (Special Issue on Recent Progress in Organic Molecular Electronics)
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概要
- 論文の詳細を見る
Photoirradiation effects on the polymer light-emitting devices (PLEDs) with a semitransparent-Al cathode have been studied. A light-emitting polymers, a poly (p-phenylene vinylene) derivative MDOPPV has been used in this study. Upon photoirradiation, the emission intensity at a constant voltage was rapidly decreased. However, the quantum efficiency of electroluminescence remained constant, indicating the spatial separation between recombination zone and photooxidized defects. On the other hand, the quantum efficiency of photoluminescence rapidly dropped upon similar photoirradation. These can be understood by taking the difference in the spatial distribution and the origin of excitons between electro- and photo-luminescence processes. It was also found that the photooxidation rate of the polymer film whose thickness is ca. 100 nm does not have thickness dependence, suggesting that the photooxidation of the polymer proceeds uniformly throughout the device.
- 社団法人電子情報通信学会の論文
- 2002-06-01
著者
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Onoda Mitsuyoshi
Department Of Electrical Engineering Himeji Institute Of Technology
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Tada Kazuya
Department Of Electrical Engineering And Computer Sciences Graduate School Of Engineering Himeji Ins
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Onoda Mitsuyoshi
Department Of Electrical Engineering And Computer Sciences Graduate School Of Engineering Himeji Ins
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